Does anyone have a chart showing recoil in Ft. Lbs of energy for each of the most popular cartridges and how they compare?

I'd be interested to know how much my 3.5" Rem 870 Supermag with 3.5" Hevi shot loads is putting out because it's about as much fun to shoot as being punched in the head over and over.
I have a pretty major pain threshold and don't get flinchy easy but I'll tell you after nine 3" shells and then five 3.5" shells patterning that thing for turkey season I was almost whimpering at the thought of what was coming when that trigger broke over.
I can offically tell you 14 shots back to back is the most my body in a T-shirt is going to take. I had a headache for the rest of the day.[:-]

I'd be curious to know what that light Supermag is generating as far as recoil goes and where that falls on a centerfire rifle chart because it would give me a pretty good idea where my "enough is enough" threshold is.
Shots 1-6 were tolerable but 6 through 14 were agony.

Makes my .30-06 seem like a BB gun.

And I've shot a Barrett light .50BMG semi auto. Much more fun.........muzzleblast is like nothing you'll ever experience [:-]but the recoil is pretty tolerable.